In PHP form development, what are some common pitfalls to avoid when handling form data submission and processing?

One common pitfall to avoid when handling form data submission is not properly sanitizing user input, which can leave your application vulnerable to SQL injection attacks. To mitigate this risk, always use prepared statements when interacting with a database to prevent malicious code execution. 

// Example of using prepared statements to handle form data submission
$stmt = $pdo->prepare("INSERT INTO users (username, email) VALUES (?, ?)");
$stmt->execute([$username, $email]);

Keywords

SQL injection XSS attacks form validation CSRF protection data sanitization

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